The SDCHP-140 from Synergy Microwave Corporation is a Bi-Directional Coupler with Frequency 10 to 400 MHz, Coupling 18.75 dB, Coupling Variation ±1 dB (Flatness), Power 20 to 30 W, Insertion Loss 0.15 to 0.85 dB. Tags: Surface Mount. More details for SDCHP-140 can be seen below.